Question

responda as equações

a) 2.(2x-5)-6=-12
b)4x-3.(x-6)=20
c)7x-10=5(x+4)
d) 2.(4x-8)+10=4.(3x-3)
e)6.(x-5)-4(x+3)=-2.(2x-9)

Answer 1

Resposta:

a) 2×(2x-5)-6=-12

4x-10-6=12

4x-16=12

4x=12-16

4x=28

x=7

b) 4x-3×(x-6)=20

4x-3x+18=20

x+18=20

x=20-18

x=2

c) 7x-10=5(x+4)

7x-10=5x+20

7x-5x=20+10

2x=30

x=15

d) 2×(4x-8)+10=4×(3x-3)

8x-16+10=12x-12

8x-6=12x-12

8x-12x=-12+6

-4x=-6

x=3/2

e) 6×(x-5)-4(x-3)=-2×(2x-9)

6x-30-4x+12=-4x+18

6x-30+12=18

6x-18=18

6x=36

x=6

Explicação passo-a-passo:

espero ter ajudado ^-^